Improvement in harrows



E.'L. HAG-AR.

HARROIWV I No; 12,059. Patented Dec. 12, 1854.

my method.

.UNITED STATES E. Lfl-IAGAR, OF FRANKFORT, NEW YORK;

IM PROVEM ENT I'N IHAZRROWS.

Specification forming part: of Letterslatent No. I 2,059, dated December 10,1854.-

To all whom it may concern: I Be it known that I, E. L. HAGAR; ofFrankfort, in the county of Her'kirner and Stateot' New York, have invented a new andfuseful Improvement in the Mode of Seen-ring and Setting Harrow-Teeth; and I; do hereby declare that the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawings, forming part of this specification, in which Figure 1 is a perspective view of a. section of a. barrow-frame with a t0oth-secured to itafter Fig. 2 isa plan or top view of the same. Fig. 3 is a side elevation.

Similar'letters of reference in each of the several figures indicate corresponding parts.

This improvement relates to a new method of securing the teeth on harrow-Trames,-'andalso, in connection with the same, to a method of rendering them capable of being adjusted from a vertical to an obliquepositiou, and of being set to any depth desired. 4

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A represents a section of a barrow-frame.

B O D E E is a metal casting set in an inclined recess cut in the inner edge of section A, as shown. This casting is provided with twosqnare holes, a I), in its lower horizontal portion, D,,0ne running in a vertical and the other in an oblique direction. The projecting parts B 0 E of the casting form two grooves, F G, of similar shape and size as the holes a b,one of which runs in an oblique direction in line with the hole a and the other in a vertical direction in line with the hole I).

On the plate B, forming. the back sides of the grooves F G, tongues c d are cast. The tongue 0 runs at right angles to the groove F and that d at right angles to the groove G. These tongues enter notches cut in the sides of the barrow-teeth and aid in keeping said teeth in place. t

H is a barrow-tooth. It is made square or nanny-sided. 6 so are the adj listing-notches or transverse grooves which'al 0 cast in one ofthe sides of the tooth. These notches receive the tongues, as represented.

it is to be set obliquely-J5 passed through the hole a and tit-ted, as shown in Figsl and 3, in

The tooth H, when the groove G, and when it is to be set 'in a vertical position is passed through the hole b and fitted in the groove F, as shown in Fig. 3. -I J is a clampor elbow-shaped ,screw-bolt,

which passes through the plate B of the cast ing, and also through the barrow-frame, as represented in Figs. 1 and 2. This bolt, as it has a. hook, J,-on its inner end, serves forlocking the barrow-tooth in eitherof the grooves,

of the casting, and also, as saidscrew passes entirely through the casting and frame A, it serves also for locking the casting firmly to the frame A'.

fis a not on the outer end of the screw-bolt. This cut, by being turned, causes the hook on the screw-bolt to bear against the tooth, and thereby causes the parts to be-firmly clamped together, as will be evident from the drawing, The screw-bolt l J is so arranged in relation to the two grooves being between them that its hook J serves for locking the tooth H in both the positions described, it only being necessary to loosen the nut and turn the bolt sufficient] y to bring the book from the position shown in black in Figs. land-3 to the position shown in red in same figures.

It is by providing the casting with two groovesone oblique and the other straight that the harrow-tooth can be adjusted from a.

vertical to an oblique position, and vice versa;

and, also, it is by providing the tooth with a.

series of notches, 0e 0, that it can be set to any depth desired.

Making barrow teeth adjustable as described is an important idea, for in case their points are broken off they can be sharpened and the teeth lowered so as to stand even with the others; and also, by securing the teeth to the frame as described, they can, in case they are broken so as to require to be replaced by new ones, he removed with ease and facility and others secured in their places with like ease and facility.

It is also an lll'l[)0l[llllt idea, in connection with the adjusting arrangement, to have the teeth capable of being set straight or oblique, for in case it is desired to harrow shallowplowed soil, then the teeth can be set straight,

and in case it is desired to harrow soil which is plowedto a greater depth, then the teeth can he set obliquely, and also lowered to the depth desired. By setting the teeth obliquely vertical to an oblique position, and of being they enter the soil more readily. I set to'any depth desired, for the purposes set What I claim as my invention, and desire tq forth.

secure by Letters Patent, is-

The manner herein shown and described of HAGAR' securing barrow-teeth to the frame A, in com- Witnesses: bination' with the means employed for making ELY T. MARSH,

said teeth capableof being adjusted from a HENRY D. MARSHALL. 

